Front and rear iron sight fits do rails Picatinny and Weaver Product Specifications: Brand: hunter_zyl size: 35mm x 45mm (height) x 30mm (front) 35 mm x 40 mm (height) x 27 mm (rear) Color: Black Finish Material: Aluminum Interface: Picatinny/Weaver bus Characteristics: Made of lightweight and extremely resistant aluminum, hard anodized according to Mil-spec specification. Calibrated and fitted as a set of do of the same design, low profile squeegee. The flip-up design with spring-loaded allows for quick deployment of the wind deflector. Rear sight: The micro-style air supply has the same MOA device as the standard sight. Bow tie: A2 post height adjustment Reverse the project Raised design with spring button for quick deployment 2 Mode Adjustable for CQB or long range mode Adjustable rear wind sight Turn the knob to adjust the airflow.